Silentnight Rest Assured Nimbus 2000 Pocket Refresh Mattress - Firmer
Mattress
Silentnight Rest Assured Nimbus 2000 Pocket Refresh Mattress - Firmer
Size
Firmness
Firm
Construction
Depth (cm)
35
Layers
5
Layer Details
- Quilted pillowtop. A quilted pillowtop with an advanced breathable sleep system, which means a soft, cushioned surface that's designed to stop you overheating through the night.
- Refresh Fibres. Vertical Refresh Fibres quickly channel moisture away from your body. In practice, that means sweat is drawn off before it can leave you feeling clammy.
- British wool and fresh fibres blend. Layers of British wool blended with sustainable fresh fibres. Wool naturally regulates temperature, adding a premium, comfortable feel that supports deep, restorative sleep.
- Fresh fibres. Horizontally arranged sustainable fresh fibres evaporate moisture out through the breathable mesh border. This helps keep the sleeping environment clean and fresh over time.
- Pocket spring support system. Individual pocket springs adjust to your body weight, which means support tailored to your shape rather than a one-size feel. They also isolate movement, so a restless partner is less likely to wake you.
Layer details from silentnight.co.uk product page, September 2026.
- Real distance from a restless partner: With 90cm each, most movement happens too far away to feel, and the pocket springs absorb what little travels across.
- Space when the family piles in: A child who wanders in at night, or a dog who treats the bed as routine, fits without pushing either adult to the edge.
- Firm support across the full width: The firmer pocket spring build keeps its shape edge to edge, so neither sleeper rolls towards the middle of a very wide surface.
- Cooler with two bodies in the bed: Two sleepers generate more heat than one, and the Refresh Fibres and breathable mesh border matter more at this size than any other.
- A bed that fills a large master: In a big period bedroom or a generous new build master, a UK super king looks proportionate where smaller sizes can seem lost.
This size suits you if...
You share the bed every night and want the most space a standard UK size offers, your partner is genuinely restless and distance matters more to you than any comfort layer, or children and pets regularly join you and everyone still needs their own share. Your bedroom should comfortably clear our suggested 3m x 2.9m minimum, with around 3.5m x 3.2m feeling right.
Consider another size if...
Your bedroom falls short of the 3m x 2.9m we suggest, or the route upstairs involves tight landing turns. The UK king is 30cm narrower at the same length, and we suggest at least 2.7m x 2.9m for it.
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What room size do I need for the Nimbus 2000 in a UK super king?
We suggest at least 3m x 2.9m, with around 3.5m x 3.2m feeling more comfortable once you add bedside tables and space to walk round. Check door swing too: a 180cm wide bed changes how furniture sits. In a loft conversion, the slope will usually decide which wall takes the bed, so measure head height there first.
Is the super king Nimbus 2000 good for a restless partner?
It is one of the better cases for the size. You get 90cm each, so most tossing and turning happens well away from you, and the individual pocket springs isolate whatever movement does cross the mattress. The two work together: distance does most of the job, the springs handle the rest.
How much bigger is the super king than the UK king in this mattress?
The UK super king is 30cm wider than the UK king, and the two are the same length. That extra width is the difference between sharing comfortably and sharing tolerably when a child or pet joins you. If your room clears our suggested 3m x 2.9m minimum, the wider size is usually the one couples wish they'd bought.
Do I need special sheets for the Nimbus 2000 super king?
Yes, on two counts. You'll need super king fitted sheets, and because this mattress is 34.5cm deep, they should be deep or extra deep versions; standard-depth sheets may not stretch over the pillowtop. A 260 x 220cm duvet is the usual pairing. Bedding at this size costs more than king equivalents, so factor that in.
Is a super king big enough for co-sleeping with young children?
For occasional night visits, comfortably. At 180cm wide it matches two UK singles side by side, so a small child between two adults still leaves everyone a workable share. The firmer feel helps here too, since the surface stays supportive rather than sagging towards the heaviest sleeper. Lighter children may find the firm surface less cushioned than a softer bed.